DEBIAN-CVE-2026-47251

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Source
https://security-tracker.debian.org/tracker/CVE-2026-47251
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-47251
Upstream
Withdrawn
2026-08-06T14:00:36Z
Published
2026-07-21T22:17:12Z
Modified
2026-08-06T14:00:36Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
Summary
[none]
Details

libheif is a HEIF and AVIF file format decoder and encoder. The fix for CVE-2026-3949 (commit b97c8b5, PR #1712) introduced an integer overflow in the very security check it added. The check itself can be bypassed, allowing a crafted HEIF file with a VVC track to trigger the same out-of-bounds heap read that CVE-2026-3949 was meant to prevent. This is a separate, currently-unpatched vulnerability. Issue #1712 was closed as fixed without testing the edge case where size is near UINT32_MAX. Version 1.22.0 patches the issue.

References

Affected packages

Debian:11 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.11.0-1
1.11.0-1+deb11u1
1.11.0-1+deb11u2
1.12.0-1
1.12.0-2
1.13.0-1
1.14.2-1
1.15.1-1
1.16.2-1
1.16.2-2
1.16.2-3
1.17.0-1
1.17.1-1
1.17.4-1
1.17.6-1
1.17.6-2
1.17.6-3
1.17.6-4
1.18.1-1
1.18.1-2
1.18.2-1
1.18.2-2
1.19.1-1~bpo12+1
1.19.1-1~bpo12+2
1.19.1-1
1.19.3-1~bpo12+1
1.19.3-1
1.19.5-1
1.19.7-1~bpo12+1
1.19.7-1
1.19.8-1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"

Debian:12 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.15.1-1
1.15.1-1+deb12u1
1.16.2-1
1.16.2-2
1.16.2-3
1.17.0-1
1.17.1-1
1.17.4-1
1.17.6-1
1.17.6-2
1.17.6-3
1.17.6-4
1.18.1-1
1.18.1-2
1.18.2-1
1.18.2-2
1.19.1-1~bpo12+1
1.19.1-1~bpo12+2
1.19.1-1
1.19.3-1~bpo12+1
1.19.3-1
1.19.5-1
1.19.7-1~bpo12+1
1.19.7-1
1.19.8-1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"

Debian:13 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.19.8-1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"

Debian:14 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.19.8-1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47251.json"